A.alluxio fs mount < alluxio path>< ufs path>B.alluxio fs mount < ufs path>< alluxio path>C.alluxio fs -mount < ufs path>< alluxio path>D.alluxio fs -mount < alluxio path>< ufs path>
A.alluxio fs lsB.alluxio fs -lsC.alluxio dfs lsD.alluxio dfs -ls
A.MUST_CACHEB.CACHE_THROUGHC.THROUGHD.ASYNC_THROUGH